Alfred Hengst: Difference between revisions
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=== E. Leitz Photographic Patents by Alfred Hengst === | === E. Leitz Photographic Patents by Alfred Hengst === | ||
*1978 APR 17 - ILLUMINATION SYSTEM FOR PHOTOGRAPHIC ENLARGERS | |||
*1980 MAY 20 - BINOCULAR TELESCOPE WITH INTERNAL FOCUSING | *1980 MAY 20 - BINOCULAR TELESCOPE WITH INTERNAL FOCUSING | ||
*1981 SEP 25 - BINOCULAR with [[Heinrich Janke]] and [[Hans-Kurt Uellenberg]] see [[Trinovid 8 x 20 BC.]] | *1981 SEP 25 - BINOCULAR with [[Heinrich Janke]] and [[Hans-Kurt Uellenberg]] see [[Trinovid 8 x 20 BC.]] | ||
Revision as of 21:52, 2 March 2012
E. Leitz Photographic Patents by Alfred Hengst
- 1978 APR 17 - ILLUMINATION SYSTEM FOR PHOTOGRAPHIC ENLARGERS
- 1980 MAY 20 - BINOCULAR TELESCOPE WITH INTERNAL FOCUSING
- 1981 SEP 25 - BINOCULAR with Heinrich Janke and Hans-Kurt Uellenberg see Trinovid 8 x 20 BC.
- 1981 SEP 25 - BINOCULAR with Heinrich Janke and Hans-Kurt Uellenberg see Trinovid 8 x 32 BA
- 1984 MAY 03 - BINOCULAR with Heinrich Janke and Hans-Kurt Uellenberg
- 1984 MAY 23 - BINOCULAR with Heinrich Janke and Hans-Kurt Uellenberg see above
